/* Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */

#pragma once

#include "paddle/fluid/distributed/auto_parallel/spmd_rules/common.h"

namespace paddle {
namespace distributed {
namespace auto_parallel {

// A Bottom Line Rule that enforces input(s) and output(s) of the Op to be
// replicated among the given mesh.
class ReplicatedSPMDRule : public SPMDRuleBase {
 public:
  // The dims_mapping of ALL TensorDistAttrs would be repeat of "-1"
  // (unsharded).
  std::pair<std::vector<TensorDistAttr>, std::vector<TensorDistAttr>>
  InferForward(const std::vector<DistTensorSpec>& input_specs,
               const paddle::framework::AttributeMap& attrs) override;

  // The dims_mapping of ALL TensorDistAttrs would be repeat of "-1"
  // (unsharded).
  std::pair<std::vector<TensorDistAttr>, std::vector<TensorDistAttr>>
  InferBackward(const std::vector<DistTensorSpec>& output_specs,
                const paddle::framework::AttributeMap& attrs) override;
};
}  // namespace auto_parallel
}  // namespace distributed
}  // namespace paddle
